Just go on UTC for the planet and have done.
No more time zones, no more changes, just set your working hours when it makes sense in your location for your business.
Light and dark will happen the same regardless. and there is no real advantage to changing time to accommodate that, particularly in a connected world with ample electric lighting.
If the local light patterns make something reasonable, then do it - just don't mess with the clocks, change your times for events.